Battery packaging structure and electric equipment

Abstract

The utility model relates to the technical field of battery packaging, in particular to a battery packaging structure and electric equipment.The battery packaging structure comprises a first battery cell, a second battery cell and a battery protection board, and the first battery cell and the second battery cell are stacked in the first direction; the first battery cell comprises a first lead-out assembly, the second battery cell comprises a second lead-out assembly, the first lead-out assembly and the second lead-out assembly are arranged on the same side of the battery packaging structure in the second direction, and the battery protection plate is arranged perpendicular to the second direction; the first lead-out assembly and the second lead-out assembly are oppositely arranged in the first direction so as to define a packaging space, and the battery protection plate is arranged in the packaging space. According to the battery packaging structure and the electric equipment provided by the invention, the working procedure of folding the lead-out assemblies is avoided, the utilization rate of the space occupied by the first lead-out assembly and the second lead-out assembly is effectively improved, and the space occupied size of the battery packaging structure in the length direction is effectively compressed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of battery packaging, in particular to a battery packaging structure and an electric device. BACKGROUND

[0002] Lithium ion batteries are ubiquitous in our daily life. In order to improve the capacity of the battery, a double-cell battery structure is often required.

[0003] In the scheme of the double-cell battery structure, the arrangement mode of the battery protection plate and the double cell usually includes a form of placing the battery protection plate parallel to the bent top sealing edge (see Chinese patent document CN218274828U) and a form of placing the battery protection plate vertically (see Chinese patent document CN218731377U). However, the form of placing the battery protection plate parallel to the bent top sealing edge requires an additional process of bending the top sealing edge during the battery assembly, and the bent top sealing edge needs to be bonded and fixed, which not only complicates the assembly process, but also occupies space and affects the volume capacity density of the battery due to the adhesive layer, and the packaging stability of the battery is limited by the firmness of the adhesive layer. The form of placing the battery protection plate vertically occupies a large space in the length direction of the battery, which greatly affects the volume capacity density of the battery. UTILITY MODEL CONTENT

[0004] The purpose of the present application is to provide a battery packaging structure and an electric device to solve the technical problem of the prior art that the form of placing the battery protection plate parallel to the bent top sealing edge requires an additional process of bending the top sealing edge during the battery assembly, and the bent top sealing edge needs to be bonded and fixed, which not only complicates the assembly process, but also occupies space and affects the volume capacity density of the battery due to the adhesive layer, and the packaging stability of the battery is limited by the firmness of the adhesive layer. The form of placing the battery protection plate vertically occupies a large space in the length direction of the battery, which greatly affects the volume capacity density of the battery.

[0005] According to a first aspect of the present application, a battery packaging structure is provided, comprising a first cell, a second cell and a battery protection plate, the first cell and the second cell are both arranged in a first direction and stacked with each other;

[0006] The first cell comprises a first lead-out assembly, the second cell comprises a second lead-out assembly, and the first lead-out assembly and the second lead-out assembly are both arranged on the same side of the battery packaging structure in a second direction, and the battery protection plate is arranged perpendicular to the second direction;

[0007] The first lead-out assembly and the second lead-out assembly are both arranged to face each other along the first direction to form an encapsulation space, and the battery protection plate is arranged in the encapsulation space, and the second direction intersects the first direction.

[0008] Preferably, the first lead-out assembly comprises a first top sealing edge and a first tab, and the first tab is led out from the first top sealing edge.

[0009] The second lead-out assembly comprises a second top sealing edge and a second tab, and the second tab is led out from the second top sealing edge.

[0010] The first tab and the second tab are both connected to the battery protection plate from two sides of the battery protection plate in the first direction, respectively.

[0011] Preferably, the first tab comprises a first lead-out part and a first connecting part connected to each other.

[0012] The second tab comprises a second lead-out part and a second connecting part connected to each other.

[0013] The first lead-out part and the second lead-out part both extend along the second direction, and the first connecting part and the second connecting part both extend along the first direction.

[0014] Preferably, the first connecting part and the second connecting part are both connected to a side of the battery protection plate opposite to the cell.

[0015] Preferably, further comprising an injection molding part arranged on a side of the battery encapsulation structure where the first top sealing edge is located, and the battery protection plate, the first top sealing edge, the second top sealing edge, the first tab and the second tab are all embedded in the injection molding part.

[0016] Preferably, further comprising a bonding layer arranged between the first cell and the second cell to bond the first cell and the second cell.

[0017] Preferably, further comprising an insulating film, and the insulating film wraps at least one side of the first cell and the second cell.

[0018] Preferably, the insulating film extends to the injection molding part along the second direction.

[0019] Preferably, the battery protection plate comprises a plate body, a first pad and a second pad, the first pad and the second pad are both arranged on the same side of the plate body, the first cell is electrically connected to the battery protection plate through the first pad, and the second cell is electrically connected to the battery protection plate through the second pad.

[0020] According to the second aspect of the present application, a power-using device is provided, which comprises the battery packaging structure according to any one of the technical solutions described above, so that the power-using device has all the beneficial technical effects of the battery packaging structure, which will not be repeated here.

[0021] Compared with the prior art, the present application has the following beneficial effects:

[0022] The battery packaging structure provided by the present application has the following beneficial effects: by stacking the first battery cell and the second battery cell along the first direction, the first top sealing edge of the first battery cell and the second top sealing edge of the second battery cell are arranged to face each other along the first direction, so that an encapsulation space is formed between the first top sealing edge and the second top sealing edge, and the battery protection plate perpendicular to the second direction is arranged in the encapsulation space. In this way, the battery protection plate perpendicular to the second direction is arranged in the encapsulation space surrounded by the first top sealing edge and the second top sealing edge, which can effectively improve the utilization rate of the space occupied by the first top sealing edge and the second top sealing edge, and effectively compress the space occupied by the battery packaging structure in the length direction.

[0023] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the following preferred embodiments are described in detail below, and the accompanying drawings are described as follows. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or the prior art description. Obviously, the drawings described below are some embodiments of the present application, and those skilled in the art can obtain other drawings according to these drawings without creative labor.

[0025] Figure 1 The cross-sectional structure schematic diagram of the battery packaging structure provided by the embodiments of the present application is shown in the following figure:

[0026] Figure 2 The explosion structure schematic diagram of the battery packaging structure provided by the embodiments of the present application is shown in the following figure:

[0027] Figure 3 The isometric structure schematic diagram of the battery packaging structure provided by the embodiments of the present application is shown in the following figure.

[0028] Reference signs:

[0029] 1-first cell; 10-first lead-out assembly; 11-first top sealing edge; 12-first tab; 121-first lead-out part; 122-first connecting part; 2-second cell; 20-second lead-out assembly; 21-second top sealing edge; 22-second tab; 221-second lead-out part; 222-second connecting part; 131-inner sealing edge; 132-sealing stamp; 133-outer sealing edge; 3-battery protection plate; 31-plate body; 321-first soldering pad; 322-second soldering pad; 4-bonding layer; 5-injection molding part; 6-insulating film.

[0030] F1-first direction; F2-second direction; F3-third direction. DETAILED DESCRIPTION

[0031] The technical solutions of the present application will be described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, not all embodiments of the present application.

[0032] The components of the embodiments of the present application generally described and shown in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but only represents selected embodiments of the present application.

[0033] Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present application.

[0034] In the description of the present application, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0035] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0036] The following description will be made with reference toFigures 1 to 3 The application discloses a battery packaging structure and an electric device.

[0037] Referring to Figures 1 to 3 As shown in the figure, the embodiment of the first aspect of the application provides a battery packaging structure, which comprises a first battery cell 1, a second battery cell 2 and a battery protection plate 3. The first battery cell 1 and the second battery cell 2 are both arranged in a stacked manner along a first direction F1. The first battery cell 1 comprises a first lead-out assembly 10, and the second battery cell 2 comprises a second lead-out assembly 20. Both the first lead-out assembly 10 and the second lead-out assembly 20 are arranged on the same side of the battery packaging structure in a second direction F2, and the battery protection plate 3 is arranged perpendicularly to the second direction F2. Both the stacked first lead-out assembly and the second lead-out assembly are arranged to face each other along the first direction F1 to form an encapsulation space, and the battery protection plate 3 is arranged in the encapsulation space.

[0038] According to the above technical features, the battery packaging structure is provided. By stacking the first battery cell 1 and the second battery cell 2 along the first direction F1, both the first lead-out assembly 10 of the first battery cell 1 and the second lead-out assembly 20 of the second battery cell 2 are arranged to face each other along the first direction F1 to form an encapsulation space therebetween, and the battery protection plate 3 perpendicular to the second direction F2 is arranged in the encapsulation space. In this way, by arranging the battery protection plate 3 perpendicular to the second direction F2 in the encapsulation space formed by both the first lead-out assembly 10 and the second lead-out assembly 20, the utilization rate of the space occupied by both the first lead-out assembly 10 and the second lead-out assembly 20 can be effectively improved, and the space occupied by the battery packaging structure in the length direction can be effectively compressed.

[0039] As Figures 1 to 3 shown in the figure, F1 shown in the figure can be an example of the above-mentioned first direction F1, and F2 shown in the figure can be an example of the above-mentioned second direction F2, wherein the second direction F2 intersects the first direction F1. Preferably, both the first direction F1 and the second direction F2 can be perpendicular, so as to adapt to the square battery structure of today. In order to facilitate the description, the direction perpendicular to the plane defined by both the first direction F1 and the second direction F2 is defined as a third direction F3, and F3 shown in the figure can be an example of the above-mentioned third direction F3.

[0040] In addition, it should be noted that the first battery cell 1 and the second battery cell 2 mentioned in the application can be one or more. When the first battery cell 1 and the second battery cell 2 are multiple, the multiple first battery cells 1 are arranged along the third direction F3, and the multiple second battery cells 2 are arranged along the third direction F3. The number of corresponding battery protection plates 3 can be one and extend along the third direction F3, or multiple and arranged along the third direction F3.

[0041] Preferably, as shown in Figure 1 The first lead-out assembly 10 includes a first top sealing edge and a first tab, and the second lead-out assembly 20 includes a second top sealing edge and a second tab. The first tab 12 and the second tab 22 can be connected to the battery protection plate 3 from both sides of the battery protection plate 3 in the first direction F1, so that the battery protection plate 3 can be arranged between the first tab 12 and the second tab 22.

[0042] Preferably, as shown in Figure 1 The first tab 12 can include a first lead-out part 121 and a first connecting part 122 connected to each other, and the second tab 22 can include a second lead-out part 221 and a second connecting part 222 connected to each other. The first lead-out part 121 and the second lead-out part 221 extend in the second direction F2, and the first connecting part 122 and the second connecting part 222 extend in the first direction F1. In this way, the contact area between the first tab 12 and the second tab 22 and the battery protection plate 3 can be effectively increased, thereby ensuring the overcurrent area between the first battery cell 1 and the second battery cell 2 and the battery protection plate 3, and improving the current carrying capacity of the battery packaging structure.

[0043] Preferably, as shown in Figure 1 The first connecting part 122 and the second connecting part 222 are connected to the side of the battery protection plate 3 opposite to the battery cell. On the one hand, the battery protection plate 3 can effectively utilize the space surrounded by the first tab 12 and the second tab 22, thereby improving the space utilization of the above packaging space and saving the space utilization of the battery packaging structure. On the other hand, the first lead-out part 121 and the first connecting part 122, and the second lead-out part 221 and the second connecting part 222 are respectively wrapped at both ends of the battery protection plate 3 in the second direction F2, thereby effectively protecting the battery protection plate 3 and improving the setting stability and safety of the battery protection plate 3.

[0044] Correspondingly, as shown in Figure 2 The battery protection plate 3 can include a plate body 31, a first pad 321 and a second pad 322. The first pad 321 and the second pad 322 are arranged on the same side of the plate body 31. The first battery cell 1 is electrically connected to the battery protection plate 3 via the first pad 321, and the second battery cell 2 is electrically connected to the battery protection plate 3 via the second pad 322.

[0045] Preferably, as shown in Figure 2As shown, the first pad 321 can be arranged on the one end of the plate body 31 in the second direction F2 close to the first tab 12, and in the first direction F1, the first pad 321 and the first connecting part 122 can be arranged opposite to each other so as to be connected.

[0046] Correspondingly, as shown in Figure 2 the second pad 322 can be arranged on the one end of the plate body 31 in the second direction F2 close to the second tab 22, and the second pad 322 and the second connecting part 222 can be arranged opposite to each other so as to be connected.

[0047] Preferably, as shown in Figure 2 the first electrode 1 can be provided with two first tabs 12, and the two first tabs 12 can be arranged in the third direction F3 on the first top sealing edge 11. Correspondingly, the side of the plate body 31 in the second direction F2 close to the first top sealing edge 11 can be provided with two first pads 321, and the two first pads 321 are arranged corresponding to the two first tabs 12 respectively.

[0048] Similarly, as shown in Figure 2 the second electrode 2 can be provided with two second tabs 22, and the two second tabs 22 can be arranged in the third direction F3 on the second top sealing edge 21. Correspondingly, the side of the plate body 31 in the second direction F2 close to the second top sealing edge 21 can be provided with two second pads 322, and the two second pads 322 are arranged corresponding to the two second tabs 22 respectively.

[0049] However, it is not limited thereto, and the number of the first tab 12 and the first pad 321 can be adjusted adaptively according to the structure of the first electrode 1. The number of the second tab 22 and the second pad 322 can be adjusted adaptively according to the structure of the second electrode 2.

[0050] In the embodiment, preferably, as shown in Figure 1 the first top sealing edge 11 and the second top sealing edge 21 can be both sealing edge structures. The sealing edge structure can include an inner sealing edge 131, a sealing stamp 132 and an outer sealing edge 133 arranged in sequence side by side in the second direction F2, so that the sealing property and reliability of the first top sealing edge 11 and the second top sealing edge 21 are effectively improved by the triple sealing edge structure of the inner sealing edge 131, the sealing stamp 132 and the outer sealing edge 133.

[0051] Preferably, as shown in Figure 1 and Figure 2As shown in the above, the battery packaging structure can further include an injection molding part 5 arranged on the side where the first top sealing edge 11 is located, and the battery protection plate 3, the first top sealing edge 11, the second top sealing edge 21, the first tab 12 and the second tab 22 are all embedded in the injection molding part 5, so that the overall insulation of the first top sealing edge 11, the second top sealing edge 21, the first tab 12 and the second tab 22 is realized, and the relative position of the first top sealing edge 11, the second top sealing edge 21, the first tab 12 and the second tab 22 is fixed, thereby improving the connection stability of the first top sealing edge 11, the second top sealing edge 21, the first tab 12 and the second tab 22.

[0052] Preferably, as shown in the above, Figure 1 and Figure 2 The battery packaging structure can further include a bonding layer 4 arranged between the first battery cell 1 and the second battery cell 2 to bond the first battery cell 1 and the second battery cell 2, so that the relative fixation of the first battery cell 1 and the second battery cell 2 is realized, thereby ensuring the stability of the battery packaging structure.

[0053] Preferably, as shown in the above, Figure 2 The battery packaging structure can further include an insulation film 6 wrapped at least once along the outer side of the first battery cell 1 and the second battery cell 2 to realize the insulation of the part of the battery packaging structure other than the part wrapped by the injection molding part 5.

[0054] Preferably, the insulation film 6 can extend to the injection molding part 5 in the second direction F2 to further ensure the insulation completeness of the battery packaging structure.

[0055] The embodiments of the second aspect of the application also provide a power consumption device including the battery packaging structure described in any of the above embodiments, so that the power consumption device has all the beneficial technical effects of the battery packaging structure, which will not be described here.

[0056] Optionally, the power consumption device can be an electrical appliance, an electronic device, a portable energy storage device, etc.

[0057] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the application, but not to limit them; although the application has been described in detail with reference to the above embodiments, those skilled in the art should understand that: they can still modify the technical solutions recorded in the above embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the application.

Claims

1. A battery packaging structure, characterized by, The battery packaging structure comprises a first battery cell, a second battery cell and a battery protection plate, the first battery cell and the second battery cell are arranged in a first direction and stacked with each other; The first battery cell comprises a first lead-out assembly, the second battery cell comprises a second lead-out assembly, the first lead-out assembly and the second lead-out assembly are arranged on the same side of the battery packaging structure in a second direction, and the battery protection plate is arranged perpendicularly to the second direction; The first lead-out assembly and the second lead-out assembly are arranged to face each other in the first direction to form a packaging space, and the battery protection plate is arranged in the packaging space, and the second direction intersects the first direction.

2. The battery packaging structure according to claim 1, wherein The first lead-out assembly comprises a first top sealing edge and a first tab, and the first tab is led out from the first top sealing edge; The second lead-out assembly comprises a second top sealing edge and a second tab, and the second tab is led out from the second top sealing edge; The first tab and the second tab are connected to the battery protection plate from two sides of the battery protection plate in the first direction, respectively.

3. The battery packaging structure according to claim 2, wherein The first tab comprises a first lead-out part and a first connecting part connected to each other; The second tab comprises a second lead-out part and a second connecting part connected to each other; The first lead-out part and the second lead-out part extend in the second direction, and the first connecting part and the second connecting part extend in the first direction.

4. The battery packaging structure of claim 3, wherein, The first connecting part and the second connecting part are connected to a side of the battery protection plate opposite to the battery cell.

5. The battery packaging structure according to any one of claims 2 to 4, characterized by, Further comprising an injection molding part arranged on a side of the battery packaging structure where the first top sealing edge is located, and the battery protection plate, the first top sealing edge, the second top sealing edge, the first tab and the second tab are embedded in the injection molding part.

6. The battery packaging structure of claim 1, wherein, Further comprising an adhesive layer arranged between the first battery cell and the second battery cell to bond the first battery cell and the second battery cell.

7. The battery packaging structure of claim 5, wherein, Further comprising an insulating film wrapped at least one turn along the outer side of the first battery cell and the second battery cell.

8. The battery packaging structure of claim 7, wherein, The insulating film extends to the injection molding part in a second direction.

9. The battery packaging structure of claim 1, wherein, The battery protection plate comprises a plate body, a first pad and a second pad, the first pad and the second pad are arranged on the same side of the plate body, the first battery cell is electrically connected to the battery protection plate through the first pad, and the second battery cell is electrically connected to the battery protection plate through the second pad.

10. An electric device, characterized by The battery packaging structure comprises any one of claims 1 to 9.

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